The magnetic field at a distance on the axis of a circular coil of radius is of that…

PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

The magnetic field at a distance

x

on the axis of a circular coil of radius

R

\frac{1}{8}

of that at the centre. The value of

x

is (a)

\frac{R}{\sqrt{3}}

(b)

\frac{2R}{\sqrt{3}}

(c)

R\sqrt{3}

(d)

R\sqrt{2}